Retirement Benefit Plans (Net Periodic Pension Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 2,766	$ 3,056	$ 3,374
Expected return on plan assets		(4,513)	(4,344)	(4,430)
Amortization of actuarial loss		1,822	2,772	2,326
Amortization of prior service credit		(47)	(100)	(99)
Curtailment gain	(1,700)	(1,701)	0	0
Plan amendments		1,441	0
Net periodic pension benefit expense (income)		(1,673)	1,384	1,171
Non-U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost		197	208	229
Expected return on plan assets		(282)	(287)	(336)
Amortization of actuarial loss		121	131	53
Plan amendments		0	0
Net periodic pension benefit expense (income)		36	52	(54)
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost		77	79	98
Interest cost		98	120	151
Amortization of actuarial loss		52	40	27
Amortization of prior service credit		(107)	(156)	(160)
Net periodic pension benefit expense (income)		$ 120	$ 83	$ 116